- if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, pairs_to_alloc))
- clib_warning ("rx prealloc failed: pairs %u", pairs_to_alloc);
- if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, pairs_to_alloc))
- clib_warning ("tx prealloc failed: pairs %u", pairs_to_alloc);
+ alloc_now = clib_min (pairs_per_slice, *n_fifo_pairs);
+ if (fs_try_alloc_fifo_batch (fsh, fss, rx_fl_index, alloc_now))
+ clib_warning ("rx prealloc failed: pairs %u", alloc_now);
+ if (fs_try_alloc_fifo_batch (fsh, fss, tx_fl_index, alloc_now))
+ clib_warning ("tx prealloc failed: pairs %u", alloc_now);
+
+ /* Account for the pairs allocated */
+ *n_fifo_pairs -= alloc_now;